To be fair, Corgan was promoting TNA when he was confronted with the question about Manson's member by a Scottish wrestler named Grado. Corgan and Manson are former tourmates and once covered "Girls Just Want to Have Fun" dressed up as a nun and preacher, (semi-) respectively.

Here's how it went down.

Grado: “I’m sitting here with Billy Corgan of the Smashing Pumpkins, and I’ve got a question that’s been on my mind for quite some time: Billy, what size is Marilyn Manson’s cock?”

Corgan: "Well, it’s bigger than yours."

Grado: “You don’t know the size of my cock."

Corgan: “No, I’ve seen your cock. It’s a bally half-incher.”

We'll tell you where you can order a transcript of the conversation later.